On the design of tone-free ΣΔ modulators

Lars Risbo

doi:10.1109/82.363540

On the design of tone-free ΣΔ modulators

Lars Risbo

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Abstract

Traditional one-bit ΣΔ modulators used for A/D and D/A conversion produce very predominant tones near half the sample rate which might intermodulate in the analog converter section and cause in-band tones. This paper demonstrates how the use of chaos can substitute dither as a means for extinguishing these tones. Especially, modulator feedback filters derived from noise transfer functions having an all-pass term seem very promising

Original language	English
Journal	IEEE transactions on circuits and systems - 2, Analog and digital signal processing
Volume	42
Issue number	1
Pages (from-to)	52-55
ISSN	1057-7130
DOIs	https://doi.org/10.1109/82.363540
Publication status	Published - 1995

Bibliographical note

Copyright: 1995 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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abstract = "Traditional one-bit ΣΔ modulators used for A/D and D/A conversion produce very predominant tones near half the sample rate which might intermodulate in the analog converter section and cause in-band tones. This paper demonstrates how the use of chaos can substitute dither as a means for extinguishing these tones. Especially, modulator feedback filters derived from noise transfer functions having an all-pass term seem very promising",

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PY - 1995

Y1 - 1995

N2 - Traditional one-bit ΣΔ modulators used for A/D and D/A conversion produce very predominant tones near half the sample rate which might intermodulate in the analog converter section and cause in-band tones. This paper demonstrates how the use of chaos can substitute dither as a means for extinguishing these tones. Especially, modulator feedback filters derived from noise transfer functions having an all-pass term seem very promising

AB - Traditional one-bit ΣΔ modulators used for A/D and D/A conversion produce very predominant tones near half the sample rate which might intermodulate in the analog converter section and cause in-band tones. This paper demonstrates how the use of chaos can substitute dither as a means for extinguishing these tones. Especially, modulator feedback filters derived from noise transfer functions having an all-pass term seem very promising

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On the design of tone-free ΣΔ modulators

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